These keep popping up all over the place. Photo by Autumn Driscoll // CTPost

The program works by checking your birthday against a UN Population Division database that estimates how many people were alive on your date of birth. That data is based on population growth and this estimation of how many people have ever lived.

There have been — and continue to be — lots of people. This Oct. 1 photo was taken in Tiananmen Square in the world’s highest populated country, China. // AP

It also gives you population data by country including facts like Qatar is the fastest growing country with a net gain of 514 people a day. And Moldova is the fastest shrinking, with a net loss of 106 people a day.

America fits in with a net gain of 309 people a day, which includes immigrants.

At the end of the day remember that this number is a guess based on an estimate from approximated data in honor of an arbitrary milestone. But it is novel. A bunch of people on my facebook have already been like ‘hey, neat.’